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Finding the Fourth Proportional to 260,151.90, 390,306.45 and 123,479.89

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Solution

The fourth proportional to 260,151.90, 390,306.45 and 123,479.89 is: 185,257.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,151.90 : 390,306.45 = 123,479.89 : x
  2. Step 2: Convert to fraction form
    260,151.90/390,306.45 = 123,479.89/x
  3. Step 3: Cross multiply
    260,151.90x = 390,306.45 × 123,479.89
  4. Step 4: Simplify right side
    260,151.90x = 48,194,998,500.47
  5. Step 5: Solve for x
    x = 48,194,998,500.47/260,151.90
  6. Step 6: Final answer
    x = 185,257.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.